48 1001 ELKINS, JAMES; HURST, DALE; ROMASHKIN, PAVEL; DUTTON, GEOFF U.S. DEPT OF COMMERCE, NOAA / CMDL / HALOCARBONS AND OTHER ATMOSPHERIC TRACE SPECIES GROUP ACATS SOLVE 1 1 2000 01 11 2000 12 21 0 ELAPSED TIME IN SECONDS FROM 00:00:00 GMT ON SAMPLE DATE 8 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 Mean Age of Air (years) Mean Age Error (1-sd) (years) Total Br (ppt) Total Organic Br (ppt) Total Inorganic Br (ppt) Total Cl (ppb) Total Organic Cl (ppb) Total Inorganic Cl (ppb) 25 The mean age (Age) of each sampled air mass was determined from the corresponding ACATS measurement of SF6 and the documented tropospheric trend of SF6 [Geller et al., 1997] using a variation of the mean age formula in Volk et al. [1997]. We use dG = -0.8 to account for a SF6 calibration scale change. This term no longer represents only a delay from the surface to the tropopause. The mean age error reported is solely based on the SF6 measurement precision and is thus useful in comparing ACATS ages from different flights. Absolute accuracy of the SF6 measurement and any systematic errors in the method used to calculate mean ages are not included. Organic chlorine (CCly) was calculated from ACATS in-situ measurements of CFC-11, CFC-12, CFC-113, CH3CCl3, and CCl4. Contributions to CCly from CH3Cl and HCFC-22 (measured by WAS) were calculated from their correlations with tracers measured by ACATS. Organic bromine (CBry) was calculated from ACATS in-situ measurements of halon-1211. Contributions to CBry from CH3Br, halon-2402, halon-1301, CH2Br2, and CH2BrCl (measured by WAS) were calculated from their correlations with tracers measured by ACATS using the formula in Wamsley et al. [1997]. The total chlorine (TotalCl) and total bromine (TotalBr) content of each sampled air mass was calculated from the documented tropospheric trends of chlorinated and brominated trace gases (e.g., Montzka et al. [1996]) and weighted with a mean age spectrum calculated by Hall & Plumb [1994]. Inorganic chlorine (Cly) and inorganic bromine (Bry) were calculated as TotalCl-CCly and TotalBr-CBry, respectively. Data submitted only for air masses with potential temperature greater than 380 K. 1 GMTs Age AgeERR TotalBr CBry Bry TotalCl CCly Cly 48213 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48283 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48353 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48423 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48493 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48563 2.17 0.56 19.295 14.336 4.959 3.424 2.938 0.486 48633 1.97 0.55 19.334 9999.000 9999.000 3.419 9999.000 9999.000 48773 2.09 0.56 19.311 9999.000 9999.000 3.422 9999.000 9999.000 48843 1.81 0.55 19.362 15.802 3.560 3.414 3.049 0.365 48913 1.62 0.55 19.394 9999.000 9999.000 3.409 9999.000 9999.000 48983 1.77 0.55 19.369 14.771 4.598 3.413 2.980 0.433 49053 1.50 0.58 19.413 9999.000 9999.000 3.405 9999.000 9999.000 49123 1.62 0.55 19.394 14.144 5.250 3.409 2.915 0.494 49193 1.70 0.55 19.382 9999.000 9999.000 3.411 9999.000 9999.000 49333 2.01 0.55 19.326 9999.000 9999.000 3.420 9999.000 9999.000 49403 2.13 0.56 19.303 10.872 8.431 3.423 2.605 0.818 49473 2.49 0.56 19.222 9999.000 9999.000 3.432 9999.000 9999.000 49613 3.02 0.53 19.078 9999.000 9999.000 3.444 9999.000 9999.000 49683 3.27 0.54 19.003 9.232 9.771 3.448 2.408 1.040 49753 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 49893 3.68 0.55 18.871 9999.000 9999.000 3.455 9999.000 9999.000 49963 3.47 0.54 18.937 7.312 11.625 3.452 2.178 1.274 50033 3.73 0.55 18.857 9999.000 9999.000 3.455 9999.000 9999.000 50103 3.47 0.54 18.937 6.956 11.982 3.452 2.134 1.318 50173 3.47 0.54 18.937 9999.000 9999.000 3.452 9999.000 9999.000 50243 3.85 0.55 18.817 6.899 11.918 3.457 2.116 1.341 50313 3.73 0.55 18.857 9999.000 9999.000 3.455 9999.000 9999.000 50453 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 50523 3.27 0.54 19.003 6.471 12.532 3.448 2.069 1.379 50593 3.81 0.55 18.830 9999.000 9999.000 3.457 9999.000 9999.000 50663 3.81 0.55 18.830 6.476 12.354 3.457 2.060 1.397 50733 3.56 0.55 18.911 9999.000 9999.000 3.453 9999.000 9999.000 50803 3.64 0.55 18.884 6.306 12.579 3.454 2.059 1.395 50873 3.73 0.55 18.857 9999.000 9999.000 3.455 9999.000 9999.000 51013 3.27 0.54 19.003 9999.000 9999.000 3.448 9999.000 9999.000 51083 3.10 0.54 19.053 8.305 10.748 3.445 2.313 1.132 51153 3.22 0.54 19.015 9999.000 9999.000 3.447 9999.000 9999.000 51223 3.47 0.54 18.937 5.847 13.090 3.452 1.978 1.474 51293 3.90 0.55 18.803 9999.000 9999.000 3.458 9999.000 9999.000 51363 3.77 0.55 18.844 5.518 13.325 3.456 1.937 1.519 51433 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 51573 3.85 0.55 18.817 9999.000 9999.000 3.457 9999.000 9999.000 51643 3.73 0.55 18.857 5.251 13.606 3.455 1.892 1.563 51713 3.47 0.54 18.937 9999.000 9999.000 3.452 9999.000 9999.000 51783 3.43 0.54 18.951 5.886 13.065 3.451 1.976 1.475 51853 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 51923 2.89 0.53 19.114 8.335 10.779 3.441 2.329 1.112 51993 2.61 0.57 19.192 9999.000 9999.000 3.435 9999.000 9999.000 52133 2.89 0.53 19.114 9999.000 9999.000 3.441 9999.000 9999.000 52203 2.98 0.53 19.090 6.533 12.557 3.443 2.079 1.364 52273 2.81 0.53 19.137 9999.000 9999.000 3.439 9999.000 9999.000 52413 2.69 0.53 19.170 9999.000 9999.000 3.437 9999.000 9999.000 52483 2.57 0.57 19.202 7.908 11.294 3.434 2.278 1.156 52553 2.41 0.56 19.242 9999.000 9999.000 3.430 9999.000 9999.000 52693 2.85 0.53 19.125 9999.000 9999.000 3.440 9999.000 9999.000 52763 2.61 0.57 19.192 9.020 10.172 3.435 2.454 0.981 52833 2.33 0.56 19.260 9999.000 9999.000 3.428 9999.000 9999.000 52903 2.33 0.56 19.260 9.572 9.688 3.428 2.544 0.884 52973 3.14 0.54 19.041 9999.000 9999.000 3.446 9999.000 9999.000 53043 3.02 0.53 19.078 8.109 10.969 3.444 2.326 1.118 53113 2.94 0.53 19.102 9999.000 9999.000 3.442 9999.000 9999.000 53253 3.43 0.54 18.951 9999.000 9999.000 3.451 9999.000 9999.000 53323 3.35 0.54 18.977 7.925 11.052 3.450 2.282 1.168 53393 3.85 0.55 18.817 9999.000 9999.000 3.457 9999.000 9999.000 53533 3.77 0.55 18.844 9999.000 9999.000 3.456 9999.000 9999.000 53603 3.47 0.54 18.937 7.430 11.507 3.452 2.207 1.245 53673 3.22 0.54 19.015 9999.000 9999.000 3.447 9999.000 9999.000 53813 3.64 0.55 18.884 9999.000 9999.000 3.454 9999.000 9999.000 53883 3.68 0.55 18.871 7.170 11.701 3.455 2.178 1.277 53953 3.68 0.55 18.871 9999.000 9999.000 3.455 9999.000 9999.000 54023 3.85 0.55 18.817 5.619 13.198 3.457 1.936 1.522 54093 3.60 0.55 18.897 9999.000 9999.000 3.454 9999.000 9999.000 54163 3.60 0.55 18.897 5.712 13.185 3.454 1.956 1.498 54233 3.73 0.55 18.857 9999.000 9999.000 3.455 9999.000 9999.000 54373 3.90 0.55 18.803 9999.000 9999.000 3.458 9999.000 9999.000 54443 3.47 0.54 18.937 6.994 11.944 3.452 2.144 1.308 54513 3.56 0.55 18.911 9999.000 9999.000 3.453 9999.000 9999.000 54583 3.98 0.51 18.776 6.531 12.245 3.459 2.085 1.374 54653 3.68 0.55 18.871 9999.000 9999.000 3.455 9999.000 9999.000 54723 3.31 0.54 18.990 7.285 11.705 3.449 2.191 1.258 54793 3.73 0.55 18.857 9999.000 9999.000 3.455 9999.000 9999.000 54933 3.52 0.55 18.924 9999.000 9999.000 3.452 9999.000 9999.000 55003 3.35 0.54 18.977 7.791 11.186 3.450 2.255 1.194 55073 3.52 0.55 18.924 9999.000 9999.000 3.452 9999.000 9999.000 55213 3.47 0.54 18.937 9999.000 9999.000 3.452 9999.000 9999.000 55283 3.14 0.54 19.041 7.748 11.292 3.446 2.250 1.196 55353 3.22 0.54 19.015 9999.000 9999.000 3.447 9999.000 9999.000 55493 3.60 0.55 18.897 9999.000 9999.000 3.454 9999.000 9999.000 55563 3.14 0.54 19.041 7.982 11.059 3.446 2.287 1.159 55633 2.94 0.53 19.102 9999.000 9999.000 3.442 9999.000 9999.000 55703 3.18 0.54 19.028 7.761 11.267 3.447 2.276 1.170 55773 2.89 0.53 19.114 9999.000 9999.000 3.441 9999.000 9999.000 55843 2.98 0.53 19.090 7.975 11.115 3.443 2.295 1.148 55913 3.56 0.55 18.911 9999.000 9999.000 3.453 9999.000 9999.000 56053 3.85 0.55 18.817 9999.000 9999.000 3.457 9999.000 9999.000 56123 3.43 0.54 18.951 5.973 12.978 3.451 1.991 1.460 56193 3.90 0.55 18.803 9999.000 9999.000 3.458 9999.000 9999.000 56263 3.43 0.54 18.951 6.242 12.708 3.451 2.046 1.405 56333 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 56403 3.64 0.55 18.884 5.609 13.275 3.454 1.943 1.511 56473 3.60 0.55 18.897 9999.000 9999.000 3.454 9999.000 9999.000 56613 3.56 0.55 18.911 9999.000 9999.000 3.453 9999.000 9999.000 56683 3.90 0.55 18.803 5.079 13.724 3.458 1.867 1.591 56753 3.64 0.55 18.884 9999.000 9999.000 3.454 9999.000 9999.000 56893 3.47 0.54 18.937 9999.000 9999.000 3.452 9999.000 9999.000 56963 3.90 0.55 18.803 4.823 13.980 3.458 1.819 1.638 57033 3.77 0.55 18.844 9999.000 9999.000 3.456 9999.000 9999.000 57173 3.90 0.55 18.803 9999.000 9999.000 3.458 9999.000 9999.000 57243 3.73 0.55 18.857 5.307 13.551 3.455 1.905 1.550 57313 3.90 0.55 18.803 9999.000 9999.000 3.458 9999.000 9999.000 57383 3.56 0.55 18.911 5.476 13.435 3.453 1.932 1.521 57453 3.52 0.55 18.924 9999.000 9999.000 3.452 9999.000 9999.000 57523 3.64 0.55 18.884 4.753 14.131 3.454 1.815 1.640 57593 3.47 0.54 18.937 9999.000 9999.000 3.452 9999.000 9999.000 57733 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 57803 3.39 0.54 18.964 5.114 13.850 3.450 1.877 1.573 57873 3.68 0.55 18.871 9999.000 9999.000 3.455 9999.000 9999.000 58013 3.47 0.54 18.937 9999.000 9999.000 3.452 9999.000 9999.000 58083 3.27 0.54 19.003 4.963 14.039 3.448 1.853 1.595 58153 3.81 0.55 18.830 9999.000 9999.000 3.457 9999.000 9999.000 58293 3.85 0.55 18.817 9999.000 9999.000 3.457 9999.000 9999.000 58363 4.11 0.52 18.735 4.040 14.695 3.460 1.722 1.738 58433 4.37 0.52 18.653 9999.000 9999.000 3.462 9999.000 9999.000 58503 3.77 0.55 18.844 3.985 14.858 3.456 1.712 1.744 58573 3.81 0.55 18.830 9999.000 9999.000 3.457 9999.000 9999.000 58643 3.64 0.55 18.884 5.399 13.485 3.454 1.930 1.524 58713 3.81 0.55 18.830 9999.000 9999.000 3.457 9999.000 9999.000 58853 4.11 0.52 18.735 9999.000 9999.000 3.460 9999.000 9999.000 58923 3.85 0.55 18.817 4.590 14.226 3.457 1.798 1.659 58993 4.28 0.52 18.680 9999.000 9999.000 3.461 9999.000 9999.000 59063 4.28 0.52 18.680 4.467 14.213 3.461 1.781 1.681 59133 3.85 0.55 18.817 9999.000 9999.000 3.457 9999.000 9999.000 59203 4.11 0.52 18.735 3.913 14.822 3.460 1.692 1.768 59273 4.28 0.52 18.680 9999.000 9999.000 3.461 9999.000 9999.000 59413 4.07 0.52 18.749 9999.000 9999.000 3.459 9999.000 9999.000 59483 4.59 0.53 18.585 3.282 15.303 3.463 1.575 1.889 59553 4.15 0.52 18.721 9999.000 9999.000 3.460 9999.000 9999.000 59623 3.98 0.51 18.776 5.466 13.309 3.459 1.931 1.527 59693 3.56 0.55 18.911 9999.000 9999.000 3.453 9999.000 9999.000 59763 3.35 0.54 18.977 7.772 11.205 3.450 2.233 1.217 59833 3.94 0.51 18.789 9999.000 9999.000 3.458 9999.000 9999.000 59973 3.68 0.55 18.871 9999.000 9999.000 3.455 9999.000 9999.000 60043 3.35 0.54 18.977 7.709 11.268 3.450 2.227 1.222 60113 3.39 0.54 18.964 9999.000 9999.000 3.450 9999.000 9999.000 60183 3.39 0.54 18.964 7.884 11.080 3.450 2.253 1.198 60253 3.31 0.54 18.990 9999.000 9999.000 3.449 9999.000 9999.000 60323 3.35 0.54 18.977 8.905 10.072 3.450 2.358 1.091 60393 2.45 0.56 19.232 9999.000 9999.000 3.431 9999.000 9999.000 60533 2.05 0.55 19.319 9999.000 9999.000 3.421 9999.000 9999.000 60603 2.29 0.56 19.269 13.453 5.816 3.427 2.839 0.588 60673 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60813 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60883 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60953 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61093 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61163 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61233 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61303 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000